Journal of Electrochemical Science and Technology

The Korean Electrochemical Society (한국전기화학회)
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PEDOT Polymer Film Based Counter Electrodes for Pt-free Dye-Sensitized Solar Cells

  • Kwon, Jeong (School of Chemical Engineering, Sungkyunkwan University) ;
  • Park, Jong Hyeok (School of Chemical Engineering, Sungkyunkwan University)
  • Received : 2013.06.11
  • Accepted : 2013.08.14
  • Published : 2013.09.30
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Abstract

Poly (3,4-ethylenedioxythiophene) (PEDOT) polymers with different electric conductivities were synthesized directly on a FTO substrate via a chemical polymerization method and applied as a platinum (Pt)-free counter electrode for dye-sensitized solar cells (DSSCs). The catalytic properties of the PEDOT as a function of electrical conductivity were studied using cyclic voltammograms, J-V measurements and impedance spectroscopy. The PEDOT counter electrode with around 340 S/cm conductivity exhibited the best performance as a counter electrode for tri-iodide reduction. The ability to modulate catalytic activity of PEDOT with changes in conductivity shows one of promising routes for developing new counter electrode of Pt-free DSSCs.

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